Inlaying machine



Feb. 19 1924. 1,483,889

A.'H. KARR INLAYNG MACHINE Filed Aug. 51. 1923 INvENToR wuv ATTORNEY Patented F eb. 19, 1924.

'z*UNITED-;81mm PATNT'OFF'CE' w ALBERT H. Kline, or Kansas oi`TY,i1vi1ssoUn i.

'INLYIG MACHINE.

Application filed August 31, 1923; Serial No. 660,289. i

machine for Cutting and routing Channels in soundingboards for violinsl and other objects for `the receptiontherein of reinforciug' and decora-tive inlay members.

I attain thisobject andother, advantages by means of the mechanism illustrated in the accompanying drawing inwhich-Figure 1,

is'a side' elevation of an' inlaying machine constru'cted in accordance with my invention. Figure 2, is a front elevation of the same. Figure 3, is a stop/plan view'of the table member of the. machine, taken on the line 3-3, in Figure 1, and showing the adjustable guide therein and, Figure 4, is an end view of thetable member apart from the machine.

Similar numerals of reference refer to corresponding parts throughout the several views. i i p Referring to the drawings-p-the numeral 1, designates a frame for supporting'the machine elements hereinafter described. The frame has a base portion 2, a vertically extending' back portion 3, and a horizontally extending arm 4, which is vertically aligned withthe base portion. On the front end of the base portion 2, and, likewise, on the front end of the arm 4, are forwardly extending bracket arms 5, having on their respective ends bearing boxes 6, and on the ends of the brackets 5, are bearing boxes 7, which are vertically aligned with V.the boxes 6; The frame is adapted for mountingon a bench or other suitable supporting medium, by the bolts 8, whichare extended through the base of the frame.``l In the bearing boxes 6 and 7, on the ends of the ai'm 4, is revolubly mounted a shaft 9, having collars 10, thereon to support the shaft in Vertical position and, also, a pulley 11, adapted for receiving an endle'ss belt, not shown, for communicat-ing motion4 to the shaft.` Onthe lower end of the shaft 9, is secured a chuck or tool holder 12, having therein a. bore adapted for receiving` a specially designed routing tool 13, lconsisting of a suitable section of a steel rod having` a diameter'adapted for producing' a channel or groove of a pre' determined width in` an object subjected to its operative movement, the lower portion of the tool being cut away fiaringtoiproduce a vface 14 and Cutting edges'l, which tool is detained in the Chuck by a setA screw 1G,

`in the well known manner. 'A plunger rod 17, is slidably mounted in the boxes 6 vand`7, on the end of'the base 1,'the lower end of the rodbeing pivotally mounted on 'a foot lever i 18,-the latter being pivoted at its-"inner end to a suitable supporting' medium, not shown. On the rod 17, is mounted a concentricstop 19 and encircling the port-ion of the i'od'bel,`

tween the stop 19 and the box 6, on lthe end of the base, is mounted a 'spiral spring '20, whichnormally pi'esses upward onthe stop 19', to thereby hold the stop against the lower side of the box 7, on the end of the bracket associated withthe end of'the base ofvthe frame. On the upper end of the rod 'is mounted a table member 21, having on the under side thereof a boss 22, which is pene-V` trated by the plunger rod andvheld in place therein by means of a set screw 23. An elongatedslide bearing' 24, is formed in the upper side of the table and the bearing adapted for slidably receiving a slide member 25. The slide member is provided with a set screw 26, which is adapted forimpinging on the botto-m of the bearing to thereby hold the slide member adjustable in the bearing. Adjacent the inner end ofthe slide member, on the upper side thereof,is rigidly mounted a guide post 27. i .i I

The guide 27, is especially designed in Contour to have a concentrically formed portion and as shown at 28, and an eccentric portion, as shown at 29, for a purpose that Will hereinafter appear.

The machine above described isadapted for the inlaying of reenforcing'or decora-V tive material, as for instance, iii the upper 'Violin sounding' board, is laid upon the table ino nressed with its upper side presented to the tool 13,

the edge of the board being held against the cccentrie portion 29 of the guide post 27. The pressure on the footlever is then re- 9, being driven, the tool is spinning and the e Cutting edges 1d and .15 thereon effect a clean Cutting ofthe channel. ,After'the tool has penet-rated the board' the operator pushcs.

thezboardvnward and, as the edge 'of the board? is continually bearin; uponthe eecentrioportionof the guide post, the channel formedis of a uniform width and uniformh7 spacedV from theed'ge of the board. The cccent-ric portion of the guide post permits the operator to routthe channel along straight or Curved lines in the one operation` as'in thecase of the violin'soundingf` board.

` where straight and Curved lines are iiivolved' in routing a' channel forinlaying material. Ify it is desired to' have Vthe channel at a` lesser distan'ee fromthe edge' of the board,` theuslide 2";is movied inwardly a 'suitable difstaneeand li'eld there by the set screw S26. I'ff a greaterdistance from the edge of the board is desired, the slidee. is moved outwardl'v asuitable distance and there set to place by the serew 26. The relative adj ustment' of the tool' 13,- With the' t'able'l, deter p v The relative adjustment of the table and theA t'ool may be obtained by sliding the tool in the chuclr` or, by sliding` the table on the plunger rod 17 or, by both. The adjustment of the tool todetermine the depth of the channel requires that the table be lowered sufliciently to permit ,thefoperator to place the board under the tool and again against the guide post and, to aecomplish thisaction, the foot pedal is pressed down, asbeforefexplained.

Having described myirivcntion. What I claim isf'- f V i r In an inlaying' machine` the combination,` of a frame, a shaft--revolubl mounted'in said frame, a channellingtool aotua'ted by saidt shaft, a plunger rodislidably mounted on said frame and aligned with said shaft, a pivoted level' pivotall,connected'.to one mines the depth of the channel. a

end of said rodj, a table adjustablyconnected' to the other end of said r`od, yieldiiig'n'ieans mounted on said rod to norrnally hold ,saidV table in elevated position, and' a `guideslidably and adjustably mounted on" said table, said guide having' anl eccentric face Constantly presented to said tool. i

Kansas City, lvlissouri. August Qfrdfifll.

ALBERT H. KARR;

VitneSSeS: i r a i `DWIGHT M. SMITH, GOODWIN CREAsoN. 

